Blesi is a famous pair of geothermal hot springs in the Haukadalur valley of southwestern Iceland, located close to the Great Geysir and Strokkur in one of the world's most celebrated geothermal areas, now part of the Golden Circle tourist route. One of the twin Blesi pools is brilliantly clear and blue — caused by the way silica particles dissolved in the hot water scatter light — while the other is turbid and milky, creating a striking visual contrast that has made Blesi one of the most photographed hot springs in Iceland. The springs offer a perfect illustration of the extraordinary diversity of Iceland's geothermal landscape.
Insider tip — Blesi is a distinctive pair of hot spring pools in the Haukadalur geothermal field: one pool is crystal clear and the other milky turquoise due to dissolved silica particles in suspension. This twin-pool formation is one of the most photogenic features in the entire Geysir area. The silica-rich water creates the characteristic blue glow when sunlight penetrates the shallow basin, making Blesi a favorite subject for photographers visiting Iceland's Golden Circle.
